Medical Definition of Red blood cells. Red blood cells: The blood cells that carry oxygen. Red cells contain hemoglobin and it is the hemoglobin which permits them to transport oxygen (and carbon dioxide). Hemoglobin, aside from being a transport molecule, is a pigment. It gives the cells their red color (and their name).
Alexander Milne Calder (August 23, 1846 â June 4, 1923) was a Scottish American sculptor best known for the architectural sculpture of Philadelphia City Hall. Both his son, Alexander Stirling Calder, and grandson, Alexander Sandy Calder, became significant sculptors in the 20th century.
For the ancient king, see Alexander the Great. Alexander (Greek: á¼Î»Î­Î¾Î±Î½Î´ÏÎ¿Ï, AlÃ©xandros; 1 August 1893 â 25 October 1920) was King of Greece from 11 June 1917 until his death from the effects of a monkey bite at the age of 27. The second son of King Constantine I, Alexander was born in the summer palace of Tatoi, on the outskirts of Athens.